48*10/15*56= 16*5/5*28=4/7
77*90/45*66=7*2/6=7/3
27/90=3/10
200/800= 1/4
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48*10/15*56= 16*5/5*28=4/7
77*90/45*66=7*2/6=7/3
27/90=3/10
200/800= 1/4